On 11/1/2014 6:17 AM, Mark Lovett Wells wrote:
> On Fri, Oct 31, 2014 at 9:44 PM, Don Schwartz  <mailto:dks@t...>> wrote:
>
>     You've had good advice. I have one of those $$ magnifying Luxo
>     lamps (with two extra lenses), that I got for little money a few
>     years ago, and still much prefer the Optivisor.
>
>
> I have a Magni-Focuser #104, which looks like it is similar to the 
> Optivisor.  Plate #104 has 2x magnification and they say a working 
> distance of 10".  I'm not sure how the 10" is measured.  To bring 
> items in focus, I have to get the lens closer than 10" to the work.  
> Maybe 10" is from my eye?  It's so close that I don't really feel like 
> I have room to move the file back and forth while sharpening.
>
> I must be missing something here.  What magnification do you guys use 
> for saw sharpening?
>
> Mark

My Optivisor is also 2X  / 10in. For saw-filing, I don't use it 
continuously, just flip it down to check or verify. I have made a to-do 
of building a riser for my saw vise which would allow me to use the 
Optivisor continuously, but it's hardly necessary, and may never climb 
to the top of my list.

Don